The physiological basis of the effect of phosphorus on kernel yield and quality in wheat was studied using two different winter wheat cultivars, Lumai 22, which has 9000kg/hm2 yield potential and medium gluten potential, and Jinan 17, which has 7500kg/hm2 yield potential and strong gluten potential. The experimentation was carried out at the experimental farm of shandong agricultural university , and Erhu village, Jiaoyu Town of Taian city from 2001to 2002 using the method of field culture combin...